Questions tagged [microchip]

Microchip Technology is an IC manufacturer, best known for its extensive range of PIC microcontrollers, but also memory and analog function ICs. The term "microchip" is a legacy term for integrated circuits, not just ones designed by Microchip Technologies. The company came into existence and took the name after the term became common parlance.

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The variation of the DAC output is abnormal

Description of the situation I want to output the data from the ADC to the DAC. I use an ADC from Microchip dsPIC33EV128GM104-E / PT and I am using 12 bits. Microchip MCP4922T-E / ST is used and ...
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93 views

Identify unknown Microchip IC from Opel LCD dashboard - markings 25072478 REV D 9119 CCA

I already asked this question in Reverse Engineering StackExchange more than one year ago. Since then I got no answer and I have tried to search again in google and so with no success. I have seen ...
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58 views

ATSAMC21 - CAN configuration - Nominal bit timing vs. data bit timing & time quanta calculation

I'm trying to configure the CAN bit rate of an ATSAMC21 to 125ksps in a CAN2.0B configuration. However, after reading through the datasheet, the ASF documentation and the ATMEL start help I'm confused....
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IMU sensor suddenly outputs only a fixed value

Description of the situation I am calculating the angle using BMI 160. Intermittently, the sensor's value is fixed. I've tested it in certain situations, but each of them happens in a different ...
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2answers
57 views

Exact meaning of the issue mentioned on Errata document

I am using PIC18F67K40. When I went through the Errata datasheet I found out that I am using A3 revision Device. There is an item number 5.1 Can somebody explain to me what is the exact meaning of ...
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50 views

Can't compile program for PIC because of a define statement

I am trying to compile an example program from Microchip using MPLABX. It looks like the IDE is not including the "xc.h" file becuase of the following code: if defined(__XC) inlcude xc.h The "...
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16 views

How to enter shutdown mode with low power mode enabled on RN4871 BLE module?

I want to use the Microchip RN4871 BLE module for a future project. It implements a low power mode that disables the internal 16MHz oscillator which in turn disables the UART interface for ...
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20 views

What is the quiescent current of the MCP73871 battery charger?

I was looking looking for a battery charging IC for a wireless device and found the Microchip MCP73871 and the TI BQ2423. Both of which do what I want, but I am not really sure about their quiescent ...
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57 views

Is it easy to predict or get notified about obsolescence for DIP ICs?

The question here might seem a bit tangent for this Stack Exchange but here it goes. In the product development phase, one of the important factors under consideration is the availability of selected ...
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1answer
78 views

A question about UART communication [closed]

Are there predefined keywords/codes that when sent from a pic to a computer running windows (UART) can elicit certain actions (like show a special pattern or open a picture on the screen) on the ...
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76 views

PIC programming in Assembly

I went through an assembly program of the PIC16F88 downloaded from microchip and saw something that I have ever seen before ...
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2answers
184 views

Why do lightning data cables have chips? [closed]

Is there a need for these chips?
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24 views

Microchip MCC LoRaWAN Library support for newer PIC16 8-bit Microcontrollers

I am building a LoRaWAN enabled sensor using a PIC1618446 8-bit microcontroller and a SX1276 based LoRa Module. I found that Microchip has a MCC LoRaWAN library for helping with this task. However, ...
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26 views

Could not generate linear output analog voltage using MCP4921

simulate this circuit – Schematic created using CircuitLab I am using MCP4921's output voltage as a control input to vary the analogue SMPS output voltage. I am able to establish successful SPI ...
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45 views

MIC4830 output voltage too low

I have built the typical applicaiton circuit from the MIC4830 datasheet. I have used the values for 0.4inch2 EL panel running at 900Hz (REL=0.369MOhm, RSW=321kOhm). The input voltage is 3.3V. My ...
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64 views

MCP1630V a battery charger

To charge a 4 cell Li-Ion battery pack, microchip have developped a circuit (board) that I am trying to understand, (the link for the PDF is here:https://www.microchip.com/developmenttools/...
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65 views

MCP23S17 IOCON register values do not update correctly

I am currently testing the functionality of a Microchip MCP23S17 SPI 16-bit GPIO port expander for an application with a number of external inputs & outputs. The initial configuration of an ...
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1answer
156 views

PIC18F67K40 - Failed to get device ID

I am using PIC18F67K40 and PICKIT3 with MPLAB 8.92V for programming. But I am getting error: Failed to get device ID I have attached schematic snap of MCLR circuitry. I am able to program other ...
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70 views

Problem with 4-SMD Crystal / PIC16F1575

I'm trying to work with 32Mhz 4-SMD Crystal. (ASX3F-32M-FA100A4) with two capacitors: 10 pF (attached datasheet) The IC I choosed is the PIC16f1575. And using MPLABX-IDE MCC I performed the connection ...
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1answer
90 views

How to build a programmable LED strip? [closed]

I'm trying to build a home-made LED strip (non-RGB). It will be using single color SMD chips in array. The thought I have right now is to have 3 rows, each with about 15 or 25 same single color LEDs, ...
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4answers
153 views

Power supply circuit for a PIC16F88 Microchip

I'm coming from the world of software, where I feel quite at home - I spend a lot of time writing code. I do not feel at home in the world of electronics and designing circuits. I really REALLY would ...
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1answer
81 views

Interrupt on Change in PIC16F18877 Not Triggered

I'm trying to trigger the interrupt service routine method in PIC16F18877 microcontroller, but the code never gets into the isr() method. Not sure what and where am i going wrong. Here is the code i'...
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31 views

PIC32MX795F512H + DP83822I Transmit Error Signal

I am using PIC32MX795F512H with DP83822I as the Ethernet PHY transceiver. On the PIC32MX there is a pin for Transmit Error (ETXERR) but no Transmit Error pin on DP83822I. What should I do with the ...
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2answers
86 views

Best way to determine power consumption of a microcontroller

What is the best way to determine the power consumption of a microcontroller? Need to select the right voltage regulator to supply 3.3V for PIC32MX795F512H.
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145 views

PIC microcontroller programmer/debugger tools for beginner

I am a final year student and am going to use a PIC device for my project, so am getting familiar with it early. I will be using MPLAB X IDE to program the PIC. How is the code actually downloaded ...
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46 views

EVB-LAN9252-SPI not responding to SPI

I just recently bought an LAN9252 evaluation board from Microchip. I have communicated with the board over EtherCAT but couldn't do the same with the SPI. I have checked the PDI register showing ...
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107 views

SPI problem with PIC18LF27K42

I am facing issue using SPI with a PIC18LF27K42 in order to drive a micro SDcard. I am not very confortable with these "new" PIC18LF27K42 and i am trying to fix this issue since several weeks without ...
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64 views

How to connect PIC32MX470F512L to a micro usb connector?

I've seen some schematics and the D+ and D- of pic seem to be connected directly to the - and + of the micro usb connector. As the micro usb has a power of +5, i'm not that confident that it would be ...
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1answer
59 views

How to enable PIC16 watchdog timer for software control?

I am working on a project where I have an I2C slave application running on a PIC16F1829. I am finding that because the ISR must read the slave address, wait for a new byte, then read that byte, that ...
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1answer
96 views

Project with wattmeter in proteus works and in practice there is difference of values

in my project i'm using a current sensor ACS712 30A, for measuring current, i tested on proteus 8.6 sp3 and works ok, but in practice (using protoboard) the sensor it's accusing current without any ...
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48 views

PIC16F Byte Shift - Assembly Code

Need to shift 3bytes each in RAM buffer to the next 3 RAM locations in a circular manner. The below code is ok, but is there any compact method to do it? ...
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Is there a difference between an NFC and RFID chip?

The other day, my friend said that he wants to write an app that uses the NFC chip on a phone to read pet microchips. I told him I was pretty sure that pet microchips don't use NFC, but he said he was ...
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mcp2221 i2c CLOCK down after ACK

I am trying to control an Analog Devices programming resistor AD5254 by a USB to I2C master device from MicroChip MCP2221. The problem I am facing is that each time MCP2221 is waiting for ACK from ...
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help identify the SMD AK1629

Failed DVR Suspect that burned down this detail:prozvanivatsya short circuit in both sides can't understand which part to replace?
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3answers
534 views

How to read a specific port with ADC in Mplab Harmony?

I configured the ADC for 3 instances/3 analog inputs: ...
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1answer
95 views

How can a watchdog timer be cleared in Mplab Harmony?

Using Mplab Code Configurator (MCC) it's easy to clear watchdog timer, for example i created a project for a PIC 16F15324T and in my code i only have to call the ...
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2answers
85 views

How to read a port by a label in Mplab Harmony?

I'm more familiarized with MCC and with that framework is really easy to read a port we just need to give a custom name in ...
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1answer
121 views

How to toggle a pin in Harmony framework for a pic?

I'm new to pic's and the harmony framework, and i'm trying to toggle a pin from high to low and vice versa in the interrupt callback of the Timer. I configured my oscillator to operate at 32 MHz or ...
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1answer
49 views

Anyone knows what is a driver implementation in Harmony?

When configuring a Timer Driver implementation the option for Dynamic and Static appears. Anyone knows, what does these 2 types mean?
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254 views

With harmony how to implement printf to uart?

I setup a project using harmony v2 for a pic32mx470f512l. In drivers -> USART i configured the UART (strange its called USART in harmony in datasheet says its a UART): Now i want to use the function ...
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1answer
149 views

MPLAB Harmony Configurator not working

After installing MPLAB Harmony Configurator from the available plugins in MPLAB (v5.05) i tried to create a new project but it seems that harmony location is not valid? I doesn't seem to have ...
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1answer
41 views

PIC32MX470F512L not appearing on harmony setup?

I installed Harmony plugin in MPLAB X IDE because i can't put this pic working with MCC. I was going to do a new project for this pic and when i was going to select it, it doesn't appear on the list! ...
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3answers
272 views

What Is the timer period of a timer of a Pic

This is causing a bit of confusion to me. I'm assuming that timer period of a timer is the time that it takes for an increment of timer. Am I correct? It works the same way for 8-bit and 16-bit timer,...
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56 views

Does the increment of a timer on pic is equal for a pic16 and pic32?

The question is because in porting code from a PIC16F15324T using MCC to a project using a PIC 32MX470F512L. There are portions of code where i have code like this: ...
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82 views

Estimating gate or transistor count for an IC

I'm messing around with calculating predicted failure rates using MIL-HDBK-217F. For microcircuits (depending on linear or digital) you need to come up with a gate count or a transistor count for the ...
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3answers
247 views

How to look at the emitted assembly code of MPLAB X IDE

I'm using MPLAB X IDE V5.05 to generate the code to program a PIC32MX470F512L. It happens that i'm having some problems in the code and i would want to take a look ...
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83 views

How to calculate instruction cycles on pic?

I want to know how much instruction cycles are each line of a program, is there a way to do that? It's important to me because i'm having a problem with the oscillator (or might be something else) ...
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83 views

PIC CCP in compare mode not changing CCP2 pin

I'm learning PIC C programming from Gooligum Enhanced C lessons. In lesson 14 CCP module there is example 4a which flashes LED every 500ms, see below: Using 16F1824 PIC I can compile in MPLAB X and ...
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88 views

What clock source is the oscillator connected at the OSC1 and OSC2 pins of a pic?

I'm connecting a Crystal SMD of 32 MHz to the OSC1 and OSC2 pins of a pic. When doing the configurations for the pic, inside <...
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32 views

Pin should be lock for sample A warning in Pic

In an ADC i'm trying to configure for a pic PIC 32MX470F512LT its giving me a warning, that like the title says, it's that the pin should be locked for sample A. I ...

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